72results about How to "Flow resistance is minimized" patented technology

A filter element for end face inlet formed of triangular channels which are alternately closed such that the fluid to be filtered must pass through the filter material in order to flow from the inlet side (22) to the discharge side (23). The channels are formed by alternating flat layers (17) and folded layers (18), whereby all sides of the inlet channels face a discharge channel. A particularly high filter efficiency is thereby achieved such that a large filter surface area and a high filter capacity are attained with a relatively small structural volume. The filter can be used, for example, as an air filter for various air filtration applications.

The invention is a prosthetic device for improving function of a mitral valve. The device includes a sealing member configured for positioning between mitral valve leaflets. The device also includes an expandable anchor frame configured to be positioned within one or more heart chambers, for maintaining the sealing member at a desired position between valve leaflets. The sealing member reduces mitral regurgitation be filling the gap that can occur between opposing leaflets of a damaged mitral valve, thus restoring proper mitral valve closure.

A backflow preventing check valve for use in a fan unit in a forced air cooling system includes a generally rectangular frame, a plurality of adjacent parallel pivot axes mounted in the frame, and a plurality of adjacent vanes that pivot around the axes between open and closed positions. The axes extend generally transverse to the direction of fluid flow through the valve, and each axis is offset from the center of gravity of its associated vane so that fluid flowing through the valve in an allowed direction moves the vanes toward the open position, and fluid flowing in a blocked direction moves the vanes toward the closed position. The axes are inclined at an angle (α) measured from a vertical reference, thereby causing the vanes to be urged by gravity to pivot towards the closed position.

A damper device is manufactured from a single integrated body. The damper device comprises a damping chamber portion, a valve housing portion with adjustable valve devices and a pressurization reservoir portion. The internal volume of the damping chamber portion is divided by a piston into a compression chamber and a return chamber and the internal volume of the pressurization reservoir portion is divided by a member that is acted upon by a pressure that pressurizes the damping medium in the device. The three different portions are arranged substantially parallel to one another and the internal volume of the valve housing is connected both to the pressurized interior of the pressurization reservoir and to both chambers of the damping chamber part so that the damper always functions with a positive pressure in both the compression and the return chamber. The body is extruded as a single workpiece with alternating heat-conducting channels and fins on its outer surface.

A membrane device and processes for fabrication and for using are disclosed. The membrane device may include a number of porous metal membranes that provide a high membrane surface area per unit volume. The membrane device provides various operation modes that enhance throughput and selectivity for mass exchange, mass transfer, separation, and / or filtration applications between feed flow streams and permeate flow streams.

An intravascular device and method of constructing an intravascular device. The device has a proximal portion which is stiffer than a distal portion. The device of the present invention may also be advanced through small vessels without the aid of a guidewire although a guidewire may be used when necessary. The device may be manufactured in a number of different ways and a preferred method is to use an expanded PTFE liner at the distal portion and an etched PTFE liner along the proximal portion. The device also has a number of different jacket sections, preferably at least four, with increasing durometer towards the proximal end and a braided section with varying pic along the length.

A gas burner with a burner lower part with a lower gas distribution chamber which is open at the top and a radial secondary air passage to supply secondary air to an inner region of the gas burner, and a burner upper part positioned loosely on the burner lower part and partially closing off the lower gas distribution chamber, and which includes a burner ring, in which an annular upper gas distribution chamber is configured, and which has a gas throughflow opening corresponding to the lower gas distribution chamber and connecting the lower gas distribution chamber to the upper gas distribution chamber.

The invention is a prosthetic device for improving function of a mitral valve. The device includes an adjustable and axisymmetrical-or-elongated sealing member configured for positioning between mitral valve leaflets. The device also includes an expandable anchor frame configured to be positioned within one or more heart chambers, for maintaining the sealing member at a desired position and size / shape between valve leaflets. The sealing member reduces mitral regurgitation be filling the gap that can occur between opposing leaflets of a damaged mitral valve, thus restoring proper mitral valve closure.

A gas turbine inlet heat exchange coil assembly includes a gas turbine inlet housing formed to include an inlet and an outlet and a flow path therebetween. A plurality of adjacent coils are located in proximity to the inlet, and moveable between a closed operative position where the coils are aligned substantially in a plane so as to maximize resistance to flow along the flow path, and an open inoperative position where said coils are individually rotated substantially 90° such that the coils lie in individual, parallel planes so as to minimize resistance to flow along the flow path.

The mixer insert (2) for a static mixer (1) extends in one longitudinal direction (L), the mixer insert (2) having a multitude of elements (2e) running transverse to the longitudinal direction (L) and at least two longitudinal supports (2f) running in longitudinal direction (L), and the static mixer insert (2) consisting of a multitude of base elements (2a, 2b, 2c, 2d) arranged alongside one another in longitudinal direction (L), each base element (2a, 2b, 2c, 2d) comprising a longitudinal support (2f), and the base elements (2a, 2b, 2c, 2d) and their longitudinal supports (2f) being arranged relative to one another such that a longitudinal support (2f) running over the entire length of the mixer insert (2) is present, and base elements (2a, 2b, 2c, 2d) arranged alongside one another are bonded to one another in a fixed manner at least via the longitudinal supports (2f).

A washing-drying / drying machine includes a tub mounted in a cabinet; a drum rotatably disposed in the tub for receiving laundry; a cooling water supply unit for supplying cooling water to condense moisture in air discharged from the drum; and a condensing plate mounted between the drum and an inner wall of the tub for receiving the cooling water to condense the moisture in the air.

A refrigerator is provided. The refrigerator includes a compressor, a condenser, an expansion valve, an evaporator, a bypass pipe, and a valve device. The condenser condenses refrigerant discharged from the compressor, and the expansion valve expands the refrigerant condensed in the condenser. The evaporator evaporates the refrigerant expanded in the expansion valve, and the bypass pipe allows the refrigerant discharged from the compressor to move toward an inlet of the evaporator. The valve device allows the refrigerant discharged from the compressor to selectively move toward the bypass pipe or the condenser. The valve device comprises an inlet, a first outlet, and a second outlet. The refrigerant discharged from the compressor flows into the inlet. The refrigerant is discharged toward the condenser through the first outlet, and is discharged toward the bypass pipe through the second outlet. The first outlet has a diameter larger than that of the second outlet.

A washing and drying machine includes a drying duct having at least one inlet end and at least two outlet ends. Consequently, air flow is increased, and drying time and power consumption are reduced. The inlet end is connected to the center portion of the circumferential surface of a tub, and the outlet ends include a front outlet end connected to the front side of the tub and a rear outlet end connected to the rear side of the tub. Consequently, the laundry is uniformly dried even when the laundry is placed in the drum at the front and / or the rear sides of the drum, and therefore, damage to the laundry is prevented. Flow resistance is minimized, and drying time and power consumption are reduced.

An oil separator for separating entrained oil from a gas stream, the separator being arranged on a housing wall which divides a housing interior from a housing exterior. A support tube, which is arranged inside an outer casing and carries a filter element on its outer circumference through which gas can flow radially. The support tube is closed at its upper axial end face and communicates at its lower axial end face with the housing interior. An impingement separator is arranged in the vicinity of the lower axial end face of the support tube. The outer casing is closed at its bottom relative to the housing in a sealed manner.

A washing and drying machine that is capable of performing heat exchange between outside air introduced into a cabinet and the circumferential surface of a tub so as to condense air used to dry laundry. No cooling water is used to condense air used to dry the laundry. Consumption of water is reduced, and therefore, the maintenance costs of the washing and drying machine are decreased. Furthermore, no condensing duct is necessary. Consequently, flow resistance is decreased, and drying efficiency is improved. In addition, sufficient space is provided between the rear surface of the tub and the cabinet. Consequently, the volume of the drum is increased, and the washing / drying capacity of the washing and drying machine is increased.

Disclosed are a heat exchanger and a turbulator for the same. The heat exchanger is integrally manufactured in a novel structure with a desirable size, so that the productivity can be improved and the flow resistance of the fluid can be minimized. The turbulator for a heat exchanger includes a plurality of crests and a plurality of valleys that are repeatedly formed, and a plurality of bent ends formed on front and rear surfaces of each crest and inwardly bent while being repeatedly alternated in a direction along which the crest and the valley are repeatedly formed. A portion of each bent end is inclined left or right to form a through hole perforated in the direction along which the crest and the valley are repeatedly formed so that the fluid passes through the through hole.

A fluid diversion conduit is described for diverting the flow of fluid, and particularly for diverting water from a stream to a discharge location. The discharge end of the duct has a segment of gradually enlarging cross sectional area, forming a hydraulic flow diffuser. Water flow through this segment is thereby slowed as the flow area increases, and most of the dynamic head of the water flow is recovered, improving flow capacity of the conduit. The rate of flow through the conduit may be monitored and controlled to achieve streamline flow in the diffuser section, and to prevent air from entering the diffuser section. Air entering the conduit may be expelled or otherwise displaced from the conduit.

A grease filter capable of reducing a pressure loss generated while air passes through the grease filter, and cooking apparatus are provided. The grease filter includes an inflow portion configured for oil particles to be introduced therethrough, and a channel provided to discharge air current and oil particles, which are introduced through the inflow portion, to an outside, wherein the channel includes an upper channel disposed in parallel while spaced apart in a predetermined distance to form the inflow portion, and a lower channel comprising a direction changing portion provided to change a direction of the air current and the oil particles introduced through the inflow portion, and a guide portion having a predetermined angle to guide the oil particles and the air current having been changed in direction by the direction changing portion.

The invention relates to a micropump comprising a pump membrane (5) which can be moved by modifying the volume of a pump chamber which is adjacent to the pump membrane (5) and a base part (1), also comprising two valves which are arranged in recesses (10,11) in the base part and react to the pressure in the pump chamber in order to alternately open and close an inlet channel (8) and an outlet channel (9) for a medium to be pumped. According to the invention, the valves are formed by functioning valve modules (40,41) without any common components. The pre-manufactured valve modules, base modules comprising the base part and hose connections (2,3) and actuator modules comprising the actuator and the membrane are combined in order to produce said micropumps.

An apparatus for suctioning external air of a clothes dryer, comprises a housing provided at one side with a suction port for introducing external air; a fan installed at the housing and generating a suction force for sucking external air while being rotated; a driving motor driving the fan; a guide duct guiding the external air introduced from the suction port to a condenser; and a grille installed at a predetermined gap from one side face of the housing where the suction port is to be installed so that a channel can be formed between the grille and the one side face and comprised of a plurality of grille plates extending in a direction lengthwise of the grille, one widthwise ends of the grille plates being bent toward the suction port. Accordingly, the apparatus has advantages such as a decrease in flow resistance, an improvement of a condensing effect and a decrease of vibration and noise by setting the flow amount and flow velocity of a cooling air to be suctioned in the best condition.

A variable intake manifold apparatus for an internal combustion engine, may include an inlet drawing in outside air and being connected to a main passage, first and second outlets branched from the main passage and fluid-connected to the inlet through the main passage and releasing the outside air drawn through the main passage through the first and second outlets, and a partition dividing the main passage and one of the first and second intake passages.

A printhead ink supply system is provided. The system comprises an inkjet printhead; an ink reservoir; an ink pressure regulator and an ink line connecting the printhead and the regulator. The ink pressure regulator regulates a hydrostatic pressure of ink supplied to the printhead and comprises an ink chamber having an ink outlet; an air inlet open to atmosphere; a bubble outlet for bubbling air bubbles into the chamber and an air channel connecting the air inlet and the bubble outlet. Each air bubble comprises an air cavity trapped inside a film or a body of ink and the bubble outlet is dimensioned to control a Laplace pressure of air bubbles drawn into the chamber as result of supplying ink to the printhead.

A device for manufacturing a double-walled thermoplastic pipe with a connecting sleeve has a molding tunnel with a succession of molds for forming a corrugated molding wall and a connecting sleeve, respectively. An extrusion device extrudes a first flexible tube into said molding tunnel and a second flexible tube into said first flexible tube. A first gas channel is arranged for generating a pressure between said first and second flexible tubes. A compressed-gas control device is connected to said first gas channel for generating a pressure p1 or a pressure p2 in said space between said first and second flexible tubes by compressed air emerging from said first gas channel. A second compressed-gas control device is connected to a second gas channel for guiding compressed gas onto an inner side of said second flexible tube. Said first pressure controller is connected to said first gas channel via a compressed-gas line that is connected to an additional compressed-gas reservoir for gas exchange therewith.

A dishwashing machine is provided. The dishwashing machine includes a washing container, at least one device for washing crockery using a washing solution, a heating device, and a sorption drying device communicated with the washing container for the passage of air between the sorption drying device and the washing container. The sorption drying device contains reversibly dehydratable material that operates to withdraw moisture from air during the passage of the air through the sorption drying device. The sorption drying device is housed in a housing and has air passing from the washing container into the sorption drying device via an air inlet and thereafter flowing along a flow path through the sorption drying device and eventually exiting the sorption drying device via an air outlet. The heating device is located upstream of the air inlet relative to the flow of air through the sorption drying device.

A gas turbine inlet heat exchange coil assembly includes a gas turbine inlet housing formed to include an inlet and an outlet and a flow path therebetween. A plurality of adjacent coils are located in proximity to the inlet, and moveable between a closed operative position where the coils are aligned substantially in a plane so as to maximize resistance to flow along the flow path, and an open inoperative position where said coils are individually rotated substantially 90° such that the coils lie in individual, parallel planes so as to minimize resistance to flow along the flow path.

A printhead ink supply system is provided. The system comprises an inkjet printhead; an ink reservoir; an ink pressure regulator and an ink line connecting the printhead and the regulator. The ink pressure regulator regulates a hydrostatic pressure of ink supplied to the printhead and comprises an ink chamber having an ink outlet; an air inlet open to atmosphere; a bubble outlet for bubbling air bubbles into the chamber and an air channel connecting the air inlet and the bubble outlet. Each air bubble comprises an air cavity trapped inside a film or a body of ink and the bubble outlet is dimensioned to control a Laplace pressure of air bubbles drawn into the chamber as result of supplying ink to the printhead.

A gas burner with a burner lower part with a lower gas distribution chamber which is open at the top and a radial secondary air passage to supply secondary air to an inner region of the gas burner, and a burner upper part positioned loosely on the burner lower part and partially closing off the lower gas distribution chamber, and which includes a burner ring, in which an annular upper gas distribution chamber is configured, and which has a gas throughflow opening corresponding to the lower gas distribution chamber and connecting the lower gas distribution chamber to the upper gas distribution chamber.

A fluid diversion conduit is described for diverting the flow of fluid, and particularly for diverting water from a stream to a discharge location. The discharge end of the duct has a segment of gradually enlarging cross sectional area, forming a hydraulic flow diffuser. Water flow through this segment is thereby slowed as the flow area increases, and most of the dynamic head of the water flow is recovered, improving flow capacity of the conduit. The rate of flow through the conduit may be monitored and controlled to achieve streamline flow in the diffuser section, and to prevent air from entering the diffuser section. Air entering the conduit may be expelled or otherwise displaced from the conduit.